Winding device



Feb. 22, 1949.

. W. J. ELVIN ETAL WINDING DEVICE Filed Oct. 2, 1946 WILLIAM J. ELVIN.

m m m ELMER R.STAHL.

ATTORNEY Patented Feb. 22, 1949 UNITED s'rA'rEs PATENT orricr.

wmnma navron v William'-J. Elvin, Frostburg, Md andEhner a.

" "StahLMeyer-sdale, Pa., asslg'nors to' celanesexww" Corporation of ware America, a corporation of Dela- Application October 2, 1946, Serial No. 700,838

4 Claims. 1

This invention relates to a novel. traversing mechanism adapted to be employed in connection with yarn twisting and winding apparatus whereby double-tapered yarn packages may be wound without efiecting any vertical reciprocating motion of the revolving spindleon which the yarn package support rests. Double-tapered yarn packages have heretofore been formed by super the package necessitates complete backwinding to' cleanup the yarn. It is, accordingly, an important object of this invention to provide novel means cooperating with the ring rail of a ring twisting and winding device for producing a traverse stroke having a builder motion superimposed thereon so as to enable yarn packages of a double-tapered, cone shape to be wound.

In accordance with this invention, two motions are superimposed upon each other, namely, arapid chaser motion and a slower builder motion that raises and lowers the ring-rail at any desired rate. For instance, the chaser mechanism may move up and down 2.5 times a minute and the builder mechanism reciprocate once, i. e. up and down, in 3.35 minutes and a total of 392 times to fill a package containing approximately two pounds of 150 denier yarn. As the entire package is covered with a layer of yarn every 5 minutes, with the above timing of motions, it can be dressed by removal of one layer, or the amount applied in 5 minutes.

This invention also relates to novel means cooperating with said traversing mechanism for enabling a magazine wrap or transfer tail to be applied to yarn packages, such as bobbins, and the like,-during said yarn twisting and winding operations. As commonly understood in the textile art, a magazine wrap or transfer tail is a portion of the inner end of the first yarn wound on the yarn support, which is so disposed as to be positively secured during the winding of the remainder of the yarn package, yet freely available for tying directly to the outer end of the yarn on another yarn package. The purpose of providin'g-a'. magazine wrap or transfer tail'is to enable an-uninterrupted flow of yarn to be maintained froirra depleted yarn package to a full package age holder on which both yarn packages are supported.

It is also an object of this invention to provide novel means for automatically applying a. magazine wrap or transfer tail simultaneously to each of a series or bank of yarn package supports while said yarn package supports are revolving at high speed.

Another object of this invention is the provisionof means, cooperating with a ring twisting and winding device wher by yarns are wound on to yarn package suppo for varying the traverse stroke of said twisting and winding device so that a magazine wrap or transfer tail may be applied on said yarn package supports.

A further object of this invention is the provision of means forming an integral part of the traverse mechanism of a twisting and winding device, which means is adapted to'vary the. traverse stroke of said device without interfering with the normal operation thereof so that a magazine wrap or transfer tail may be applied to yarn packages being wound thereon.

Other objects of this invention will appear from the following detailed description and the accompanying drawing;

In the accompanying drawing wherein the predetail of the magazine wrap or transfer-tail applying mechanism.

Like reference numeralsindicate like parts 0 throughout both views of the drawing.

Referring now to the drawing and more particularly to Fig. 1, a yarn 3, coming from any suitning rings suitably spaced thereon so that multiple winding operations may be carried on. Be-

B j h as n a creel Other 37 1 packneath ring rail 9 is a stationary channel iron Ill 3 on which are mounted a number of spindles ll. each of which supports a bobbin indicated by reference numeral I2 set thereon and in frictional engagement therewith. Only one spindle and.

bobbin is shown for the sake of clarity. Bobbin i2 comprises a barrel i2, an upper flange i4 and a flange I! which acts to protect the magazine wi ap or transfer tail l4 placedat the base of barrel I through the operation of our novel traverse adjustment mechanism. Spindles II are rotated at high speed by suitable driving means (not shown) which engage the whorl i1 of each,

The downward stroke of the traverse or chasermotion of ring rail 2 is-produced through the action'of a heart-shaped uniform motion cam I8, keyed to a suitably driven rotating shaft II, which acts on a cam follower 2| rotatably mounted on a pin 2| carried in a grooved arm 22. One end of arm 22 is freely mounted on a suitably driven rotating shaft 24, only a portion of which is shown. Beneath arm 22 is a second arm 24 which is suspended from shaft 22 by means of brackets 25 which are also freely mounted on rotating shaft 22, but independently of arm 22. V

The angle formed by arms 22 and 24 during twisting and winding operations may be increased or decreased through the action of a rotatingheart-shaped cam 22, the surface of whichcooperates with a cam follower 21 rotatably mounted 'on a pin 24. Cam 26 is keyed to a shaft 22 mounted in bearings III fixed to supporting brackets II which are welded or otherwise attached to lower arm 24. The driving means provided hereinafter described, producing the desired reciprocating vertical traverse of ring rail 2.

Traverse rocker arm I! is keyed to a rotatable shaft 44 mounted in a bearing ll integral with a supporting bracket 20. Shaft 44 also has keyed 4 thereto a second link 41 having a bifurcated and forming fingers 42 which carry between them a pin it having a lifter arm 4. Journaled thereon. Lifter arm ll has an extension ll integral therewith provided with a set screw'l2 by means of which the angle between link l1 and arm ll may be varied to provide any desired adjustment in the traverse stroke. Lifter arm 42 is further provided with a roller 82 iournaledon a pin '4 and a roller 85 journaled on a pin .4. Roller 42 supports thefoot 21 of ring rail lifter rod 42 while roller ll supports the foot I of pigtail guide bar lifter rod 14. Shaft I4 also carriesa rod 1i provided with a counterweight 12 whose position along rod 1| may be varied by a set screw 12 and whose weight exerts a torque on shaft 44 tending to raise ring rail 2. It will be understood that traverse chain II extends thefull length of the winding machine and actuates a plurality of traverse rocker arms l2 and lifter arms 42 suitably disposed along said machine together with a plurality of counterweights 12 to render the traversing thereof smooth and even.

The rotation of cam ll forces arm 22 downfor rotating cam 2 is generally indicated by reference numeral 32, and comprises gears 22 and 34 keyed to driven shaft 23, gear 34'meshing with a helical gear 25 fixed to-a drive shaft 36 which rotates in a bearing 21 and carries a worm 22 at the opposite end thereof, the latter meshing with a gear 89 keyed to shaft 29. The end of drive shaft 26 carrying worm 22 is supported in a bracket 40.

During the normal course of the twisting and winding operation, the rotation of uniform motion cam IS in contact with the surface of cam follower 20 forces arm 22 down over one half of its rotary motion and allows it to rise over the other half through the action of suitable means hereinafter described. Since cam follower 21 is normally in constant contact with the surface of cam 26 (except during thecourse of the magazine wrap applying operation as shown in the drawing); arm 24 will also fall and rise. However. the angle between arms 22 and 24 will vary, depending upon the position of cam 28. The object served by causing said variation in the angle between arms 22 and 24 will be hereinafter described in detail.

Thus, on the downward stroke; caused by the rotation of cam i8 and the action of cam follower 21 on cam 20, the resulting motion of arm 24 will draw traverse connecting strap or chain 4| down since one end of the latter is attached to arm 24 through a link 42 mounted for free rotation on a pin 43 set in brackets 44 integral with ward and, withfcam follower 21 hearing on cam 26, arm 24 will also be forced downward causing traverse connecting chain 4i to rotate drums 4t and 41 in a counter-clockwise direction so that traverse chain ll being wound on drum 41 rocks arm 52 to the left thus allowing ring rail 2 to fall. After the peak of cam ll, pressing on cam follower 20, has forced arm 22 to its lowermost position? the release of arm 22 from the downward force of cam ll allows the torque exerted on shaft 54 by the series of counterweights 12 to traverse stroke of a fixed distance.

Without a suitable builder motion superimposed on the traverse motion above. described. the yarn windings will tend to form a yarn package of cylindrical shape. Such a package is quite undesirable in the present instance since the traversing of the heavy ring rail cannot be ei-. fected with enough speed to yield a yarn package with sufficiently coherent and compact yarn windings to resist sloughing of! or turning at the 8 rotation of cam 28, the gear-means effecting said rotation having been described above in detail. As pointed out. the rotation of cam 26- acts to increase and decrease the angle between arms 22 and 24, the particular angle depending upon the peripheral position of said cam 26 in-contact with cam follower 21. Thus, since arm 22 is causedto reciprocate, constantly through a uniform and unvarying angle as heart-shaped uniform mo tion cam 18 rotates and the angle between arms 22 and 24 gradually increases and then decreases due to the rotation of cam 26, the traverse stroke imparted to ring rail 8 through traverse connect-Q ing chain 4! and traverse chain 50 will be'uniform in length but the path thereof will be advanced progressively upwards as the angle between arms 22 and 24 is decreasing and will move progressively downward as the angle increases.

The greater the angle between said arms 22 and 24 the lower ring rail 9 will be drawn by traverse connecting chain 4| and chain 50. By maintaining a suitable ratio between the peripheral speed of cams i8 and 26, respectively, the rate at which the builder motion advances and returns the path of'the traverse stroke may be varied to form a yarn package of any desired tapered structure;

With cam l8 rotating approximately about eight times for each rotation of cam 26 a yarn pack age of the shape shown in dot-dash lines in Fig. 1 and indicated by reference numeral 14 will be formed. The central portion 15 of said package will be cylindrical in shape since the yarn windings overlap constantly over this section with the der It provided with an inlet 19 having a tube 80 attached thereto connected to a suitable supply of air under pressure. Cylinder I8 is also provided with a piston 8| carryin an inverted sealed cylinder 82 having a piston rod 83 of rectangular cross-section attached thereto as by a pin 84. Piston rod 83 passes through a guide or bracket 85 fixed to arm 24 as by a rivet 88. The

entire cylinder assembly is mounted on arm 24 by means of brackets 81 and bolts 88.

The magazine wrap or transfer tail is placed on the bobbin I2 at the start of the winding operation. The winding of the yarn package is begun by throwing yarn 3 on to barrel I3 of bobbin l2 in the usual manner and the traverse of ring rail 8 then distributes the windings along said sume their normahrelative'position with]:

again resuming contact with can jfollo je'rgjl and the'winding of the yarn packa'geiis continued.

Our novel apparatus buildsthe v'ery' desirable double-tapered yarn packages'rvith'iiut employe ing a traversing spindle thus reducing the and maintenanceof said winding devIce jFur -f thermore, with the spindle stationaryfthe, ii

throw hazard common ,to the traversing. spindle is entirely liminat d; The] application ,of the magazine wrap or transfer, tail be effected without interferingwith the normaliwindingop-f eration. 7 While the means employedhaveibeen described as actuated by compressed air, me

chanical or electrical means may be employed lieuthereof.' v I Where a parallel-sided compactly, wound yarn package having "a magazine wrapor transfer, tailv is desired, it maybe obtained'employing our novel apparatus andwinding the yarn on to a'jyarn package support, bobbin or tube having a double? tapered spool-shaped barrel in placev of the cyliri' drical barrel shown ihFig'; 1 of "the'drawing. The. contour of thebarrel'retains theyarn and the combined builder and chaser motions dis-I tribute the yarn; windin s on the barrel'fin such a way that the magazinefwrap or"'trans'fer,tailis freely available an the final yarnpackageis cylindrical in shapel It is to be understood, thatthe m igoingi at:

tailed description is given merely by way of mus-i tration and that-many i ariations may :befmade therein without departing' 'from the spirit of our.

invention.

' Having de-smbed ofir, n ention; that we. at sire t secure by L tt vPatent is:

1. In adevice for 'P' TQd i, I ,Wm. l okages having a transfer tall, the combination with a rotating yarn support and a reciprocatingring barrel. When ring rail 8 is on the initial downward stroke after winding has commenced, the valve (not shown) controlling the supply of air under pressure to pneumatic cylinder 18 is opened and the air allowed to enter said cylinder. This action forces arms 22 and 24 a maximum distance apart, as shown in Fig. 1, which is greater than that normally effected by the action of cam 26.

rail for winding yarn onto said support,v of. means for reciprocating the ring railto produce a chaser motiom with a' tav rsestrore-trjmaform'length, means for superimposing a builder motion on said chaser motion bypro l Sfively raising the path f the unifo m; traverse wok:i said i e w am-support and progressively lowering the path'of said' 'uniform traverse'stroke'relative to said yarn support, and means for instantaneously extending the length of the'downward 'traversestrokeof the reciprocatingring'rail' below the normal traverse stroke i",here'o' f;'so' as 'to 'causethe wind ing of a relativelysmall amount of yarn onthe 1 yarn support at a; 'point s aced from'the main body of yarn, said small amo nt-or yarn [belug available for use'as a transfer tail."

2. In a devicefforprgnlucir g packages having a transfer tail, thecombinatiomwith a rotating yarn support, and' a reciprocating ring:

rail for winding yarn onto aid yarn support,

.pf means for reciprocating'thelring railto produce' achaser motion with a traverse str'oke of" uniform: length-said means including aflcounterweight for lifting said rin'gj'iail toeiiec't the u'pward traverse stroke and"means fordepressing" said ring rail to effect the downward traverse stroke comprising a pair of superimposed, co-

jaeen't yarnfpackage'es 'durini It 7 operatively reciprocating arms spaced at a variable angle to each other and mounted on a common pivot, a rotating cam bearing on the upper arm to depress said arm with an intermittent uniform stroke, ,a traverse connecting chain attached to the lower of said arms and operatively connected to the ring rail, the cooperating action'of said cam, arms and counterweights reciprocating the ring rail with a. chaser motion, means for superimposing a builder motion on said chaser motion, said means including s rotating cam intermediate of and separating said arms for progressively increasing and decreasing the angle between said arms and the distance said traverse connecting chain moves, so as to progressively raise the path of the uniform traverse stroke of said ring rail relative to said yarn support and progressively lower the path of said uniform traverse stroke relative to said yarn support, and means for instantaneously eirtending the length of the downward traverse stroke of the reciprocating ring rail below the normal traverse stroke thereof, so as tocause thewinding of a relatively small amount of yarn on the yarn support at a point spaced from the main body of yarn, said small amount of yarn being available for use as a transfer tail.

3. In a device for producing headless yarn packages having a transfer tail, the combination with a rotating yarn support and a reciprocating ring rail for winding yarn on to said yarn support, of means for reciprocating the ring rail to produce a chaser motion with a traverse stroke of uniform length, said means including a counterweight mountedon a rotating shaft for lifting said ring rail to effect the upward traverse stroke and means for depressing said ring rail to effect the downward traverse stroke comprising a pair 'of superimposed, cooperatively reciprocating arms spaced at a variable angle to each other and mounted on a common pivot, a rotating cam bearing on the upper arm to depress said arm with an intermittent uniform stroke, a traverse connecting chain attached to the lower of said reciprocating arms and operatively connected to the ring rail, said connection comprising a rotatably mounted drum, a traverse chain having one end attached to said drum, a rocker arm having the other end of the traverse chain attached thereto and a lifter arm supporting the ring rail mounted on the rotatable shaft carrying the counterweight, the cooperating action of said rotating cam, arms and counterweight reciprocating the ring rail with a chaser motion, and means for superimposing a builder motion on said chaser motion, said means including a re,- tating cam intermediate of and separating said arms for progressively increasing and decreasing the angle between said arms and the distance said traverse connecting chain moves, so as to progressively raise the path of the uniform traverse stroke of said ring rail relative to said yarn support and progressively lower the path of said uniform traverse stroke relative to said yarn support, and means including a pneumatically operated piston arm mounted on the lower arm for forcing said upper and lower arms apart to an angle greater than that normally eifected by the cam intermediate thereof, whereby the downward stroke of the reciprocating ring rail is extended below the lowermost normal traverse stroke produced by the chaser and builder cams, so as tocause the winding of a relatively small 8 r amount of yarn on the yarn support at a point spaced from the main body of yarn, said small amount of yarn being available for use as a transfer tail. I

4. In a device for producing headless yarn packages having atransi'er tail, the combination with a rotating yarn support and a reciprocating ring rail 'for winding yarn on to said yarn support, of means for reciprocating the ring rail to produce a chaser motion with a traverse stroke of uniform length, said means including a counterweight mounted on a rotating shaft for lifting said ring rail to effect the upward traverse stroke and means for depressing said ring rail to'eiiect the downward traverse stroke comprising a pair of superimposed, cooperatively reciprocating arms spaced at a variable angle to each other and mounted on a common pivot, a rotating cam bearing on the upper arm to depress said arm with an intermittent, uniform stroke, a traverse connecting chain attached to the lower of said arms and operatively connected to the ring rail, said connection comprising a rotatably mounted drum, a traverse chain having one end attached to said drum, a rocker arm having the other end of the traverse chain attached thereto and a lifter arm supporting the ring rail mounted on the rotatable shaft ca rying the, counterweight, the cooperating action of said rotating cam, arms and counterweight reciprocating the ring rail with a chaser motion, and means for superimposing a builder motion on said chaser motion, said means including a rotating cam intermediate of and separating said arms provided with geared drive means rotating said cam at a lower speed than said first-mentioned cam for progressively increasing and decreasing the anglebetween said arms and the distance said traverse connecting chain moves, so as to progressively raise the path of the uniform traverse stroke of said ring rail relative to said yarn support and progressively lower the path of said uniform traverse stroke relative to said yarn support, and means including a pneumatically operated piston arm mounted on the lower arm for forcing said upper and lower arms apart to an angle greater than that normally effected by the cam intermediate thereof, whereby the downward stroke of the reciprocating ring rail is extended below the lowermost normal traverse stroke produced by the chaser and builder cams, so as to cause the winding of a relatively small amount of yarn on the yarn support at a point spaced from the main body of yarn, said small amount of yarn being available for use as a transfer tail.

WILLIAM J. ELVIN. ELMER R. SI AHL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,397,905 Rhoades Nov. 22, 1921 1,466,290 Kay "Aug. 28, 1923 2,209,840 McHugh July 30, 1940 FOREIGN PATENTS Number Country Date 347,710 Great Britain Jan. 30, 1930 

